package com.study.lxy.springcloud.uclient.interceptor;

import com.study.lxy.springcloud.common.utils.UUIDUtils;
import org.slf4j.MDC;
import org.springframework.stereotype.Component;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

@Component
public class LogInterceptor implements HandlerInterceptor {
    private static final String REQID = "requestId";
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        String requestId = UUIDUtils.getUUID();
        MDC.put(REQID,requestId);
        return true;
    }

    @Override
    public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {
        MDC.remove(REQID);
    }

}
